Fuel-feeding apparatus.



Patented 061;. 9,1917.

F. WEINBERG` [FUEL FEEDING APPARATUS. APPLICATION FILED DEC. 11,191.4.`

ivm/Emol? TTorinEY gx. @MMA clear, and' exact FREDERICK WEINBERG, OFDETROIT, MICHIGAN.

FUEL-FEEDING APPARATUS.

Specication of Letters Patent.

Patetea oct. a, i917.

Application filed December 11, 1914. Serial No. 876,604.

To all whom, t may concern Be it known that I, FREDERICK llTEINBERG, acitizen of the United States, residing at Detroit, county of lVayne,State of Michigan, have invented a certain new and useful Improvement inFuel-Feeding Apparatus, land declare the following to be a full,description of the same, such as will enable others skilled in the artto which it pertains to make and use the same. reference being had tothe accompanying drawings, which form a part of this specification.

My invention relates to apparatus for supplying a hydrocarbon to acurrent of air to form a combustible mixture and is especially designedto be used with an internal combustion engine.

A special object of my improvements is to provide an improved mode ofdrawing the liquid hydrocarbon from thel supply reservoir and formaintaining a constant level in the reservoir from which the sprayingnozzle is directly supplied and an apparatus that shall maintain aconstant level relative to said nozzle when such direct supply reservoiris tipped at different angles and means for supplying from said nozzlequantitatively a less proportion of hydrocarbon t0 the air at highspeeds. ,I

I secure this object in the device illustrated in the accompanyingdrawings in which,

Figure l, is a cross section of an apparatus embodying my inventiontogether with so much of the supply reservoir and the intake passage ofan internal combustion engine as is necessary to illustrate the relativear- .`rangement of said apparatus with reference to these parts.

Fig. :2, is a section similar to Fig. 1 show- `ing a part of saidapparatus with the movable parts in a second operative position.

Figs. 3, 4 and 'are detail sectional views of a part of said apparatusillustrating how a constant level of the liquid in the direct supplyreservoir relative to the spraying nozzle is maintained with differentangles of lateral inclination of such reservoir.

a a is a casing constituting an auxiliary tank divided into twocompartments forming a. constant level reservoir b and an intermediatereservoir c, the latter being located directly above the former. f is ashort pipe, or passage, leading from the reservoir c and extending ashort distance downward which,

into the reservoir b, the lower end of the passage, or pipe, f is cut orchamfered to an angle which may be about 45' degrees, as shown, and thislowerend is open, the highest part of said opening being indicated bythe reference let-ter f1.

b2 is a passage putting the upper part of the reservoir b intocommunication with the outer air.

The reservoir c is normally closed from the atmosphere. If now a liquid,as gasolene is poured into the reservoir c, it will flow down the pipe,or passage, f until it has filled the reservoir b toa level which shallclose the opening of the lower end of the passage f and prevent airpassing up said passage, and this level of liquid in the reservoir I)will be maintained, or if liquid is removed from it, it will berestored, automatically, by a supply from the reservoir o in a familiarand well understood manner. If now the reservoir b is turned todillerent angles, as indicated in Fi s. 3, 4 and 5, the level will stillbe maintained at the height of the point f1.

1' is the intake passage through which the air is drawn for combustionengine.

e indicates a supply tank forming a source lof supply of liquidhydrocarbon.

d is a normally air tight float chamber, in

the example shown formed within the reservoir c. g, is a passage throughthe bottom of the chamber d. L is an automatic outwardl)7 opening valveadapted to control the passageg, and z' is a pipe communicating with theinterior of the chamber d and eX- tending downward beneathk the level ofthe liquid in the supply tank e.

j, isan opening through the top of the chamber d and mis a secondopening by when the opening j is unobstructed, the chamber d will beplaced into communi- .cation with the reservoir c through the openlngsy', m. `c is a. valve adapted to controlA the opening j. 8, is a valvestem extending downward from t-he valve c. y, is a double armed leverpivoted to a stationary support z. A rod a: is pivotally connected atits upper end with the outer end of one arm of the lever y, the otherend 2 of said lever extends between two lugs 12 on the stem 3. 4, is aspring secured at its ends at opposite sides of the chamber d andextending transversely across said chamber. The spring 4 is bent betweenits Secured ends and at its the charge for an internall center issecured a float 5. The spring 4 extends between two lugs 11 on the valvestem 3 and between another pair of lugs on the valve stem p.

ln, is an opening extending through the top of the chamber d providedwith a valve seat at both ends against which the valves p and 0areadapted to seat to close thev opening n. g, is a pipe opened at oneend into the passage fr. and at the other end into an inclosed chamberwith which the passage n communicates.`

8, is a throttle valve in the passage 7 and 9 is a passage leading frombeneath the level of the liquid in the chamber b to a point just abovethe closed valve 8.

t is a conical sheet metal sleeve tting at its ends and adapted toreciprocate in the passage r and being constricted toward its center soas-to leave a vacuum chamber between said sleeve and the wall of thepassage r and to form a strangling tube. The pipe Q communicates withthe passage 7' in said vacuum chamber. 'v is a coil spring resting atits upper end and against lugs 'w w2 and at its lower end pressing thetube t downward. vu is a lug limiting the downward travel of the tube t.s is a delivery, or spraying nozzle, leading from the reservoir I) andextending into the-passage r and terminating in a spraying aperture s1in the constrict-ed portion of the tube t.

The lugs lw fm2 and u are fixed eccentrically to screw threaded plugswhich extend through the wall of the passage 1'. By turning saidplugsthe position of the lu'gs is altered and thus the-tension of the spring'v may be adjusted by means of the lugs w 'wz or the position of thetube t by means of the lug u.

The plug from which the, lug w2 extends is provided with a lever arm atits outer end and this arm is united by a connecting rod with the arm 13by which the throttle valve is manipulated, so that the adjustment ofthe throttle valve shall also adjust the tension of the spring fv.

7, is a cock extending from the air space of the reservoir c to theouter air. By openf ing the cock 7 air may be admitted to the reservoirc and the liquid ltherein will thereby be permitted to flow through thetube f into the reservoir b to temporarily raise the level of the liquidtherein.

It will be observed that the points f1 and s1 are directly in line witheach other longitudinally of the *vehicle so that when the reservoir istipped laterally, as shown in Figs. 3, 4 and 5, the points indicated bysaid letters will remain at the same level as shown. i A s v Theoperation of the above described device is as follows:

l. When there is a suliicient amount of liquid in the reservoir e andchamber d, the float f V shown in Fig. 2,

' ered through the passage 9.

incase? will be raised thereby and will press the spring 4: up to andbeyond the straight line between its vsupports when the energyaccumulated will carry'it positively upward to the position shown inFig. 2 thus closing the opening n by means of the valve p an raising thevalve k through the lugs 11 and valve stem 3 and the raising of thisvalve stem carries the end 2 of the lever y upward and presses the rodo: downward striking against a lug or arm extending from the valve 71.and assisting to open said valve.

Y In this position it will be noted that both the air spaces and theliquid spaces of the reservoir e and chamber d are in communi` cationwith each other and liquid may freely flow from the latter to theformer.

V'Vhen the level of the liquid in the reservoir c and chamber d hasfallen by reason of the draft of the engine from the reservoir b, Vthefloat 5 will fall drawing the spring 4 down thus drawing the valve pfrom its seat and causing the valve k to close the passage j. rlhe valveh will now .automatically close by gravity.

In this position of the parts the connections between the air and liquidspaces of vthe chambers c and d are closed and the draft of the enginewill draw the air through vthe pipe q .and past the valve o from thechamber d thus causing. a' partial v vacuum in said reservoir anddrawing a sup# tank e .through ply of liquid fuel from the the pipe iinto the chamber d causing the level of the liquid to rise in saidchamber until the parts are returned tothe position when the-liquid thusdrawn through the pipe 'i will be free to flow into the reservoir o andfrom thence through the 'passagef to the reservoir b. It may beobserved-that the valve h will open automaticallyfas soon as the passagej is opened by the valve k on account of the higher level in the chamberd and because of the rod striking against a lug extending from saidvalve. y

lff the throttle valve 8 is closed or nearly closed, the liquid fuelwill be drawn through the passage 9 and the engine may be started orprimed by causing the fuel,to be deliv- 'lhe reference number 20, Fig.1, indicates a water jacket surrounding the reservoir b and actingto'impart heat to said reservoir. This water will be supplied from thejacket of the engine or from a similar source' of heat connected withthe engine.

rlhe chamber between ithe and the wall of the intake passage willcommunicate by the passage t2 with the intake passage and therefore willhave a partial vacuum drawn therein which will be somewhat modified bythe area of the communi'- cating passage between said chamber and theintake passage. `l

Venturi tube What I claim is:

1. In an apparat-us of the kind described, the combination of a supplytank, a vacuum producing passage, an inclosed chamber having a liquidspace and an air space, said vacuum producing passage communicatingwithv said chamber, a conduit extending from a point beneath the liquidin said sup-4 ply tank to said inclosed chamber, an inclosedintermediate reservoir having an air space and a liquid space, aaliquidconducting passage leading from the liquid space of said chamber to saidintermediate reservoir, means for permit-ting the flovv of liquid fromsaid chamber to the intermediate reservoir and preventing the flow inthe reverse direction, and means closed to the outer air for connectingand disconnecting the air spaces in said chamber and intermediatereservoir. l

2. In an apparatus of the kind described, the combination of a supplytank, an inclosed chamber, a vacuum producing passage communicating withthe interior of said inclosed chamber. a conduit extending from a pointbeneath the liquid in said supplyv tank to said inclosed chamber, aninclosed intermediate reservoir, means Where.,

by the Huid in said chamber is caused to flow to the intermediatereservoir. aconstant level reservoir open to the atmosphere, and apassage 'from the intermediate reservoir to said constant levelreservoir open atits lower end and so located that the liquid in saidconstant level reservoir shall form an air seal so that a substantiallyvconstant level shall be thereby maintained in said consta-nt levelreservoir.

3. In an apparatus of the kind described,

the combination of a supply tank, an inclosed chamber, a vacuumproducing passage communicating vvith the interior of said chamber, aconduit extending from a point beneath the liquid in said supply tank tosaid chamber, an inclosed intermediate reservoir, means for connectingand disconnecting the #upper portions of said chamber and intermediatereservoir whereby the fluid in said chamber is caused to flow by gravityto said intermediate reservoir, a constant level reservoir open to theatmosphere, and a passage'leading from said intermediate reservoir tosaid constant level reservoir open at its lower end and so l0 cated thatthe liquid in said constant level reservoir shall form an air seal sothat a substantially 'constant level shall be thereby. maintained insaid constant level reservoir.

4. In an apparatus of the `kind described, the combination of a supplytank, an inclosed chamber; an intake passage lto an internal combustionengine. a passage communicating with the interior of said chamber andsaid intake passage, a conduit extending from a point beneath theliquidin said supply tank to said chamber, an 1nclosed intermediatereservoir, means operating when the air pressure in said chamber andintermediate reservoir is equalized for permitting the fluid in saidchamber to flow to said intermediate reservoir, a constant levelreservoir open to the atmosphere, a passage leading from theintermediate reservoir to said constant level reservoir open at itslower end and so located that the liquid in said constant levelreservoir shall form an air seal sok that a substantiall)r constantlevel shall be thereby maintained in said constant level reservoir, anda nozzle extending from said constant level reservoir into said intakepassa e.

5. n a combination consisting of an intake passage, a liquid reservoiropen to the atmosphere, a supply nozzle extending from said reservoir to-said intake passage, an inclosed chamberlocated at a higher level thansaid reservoir, a passage extending from said chamber downward rintosaid reservoir and open at its lower end and so located thatv the liquidin said reservoir shall form an air seal so that normally a.substantially constant level shall be thereby maintained in saidreservoir. and means for opening theair space ofsaid chamber to theouter air to the extent and for the time required. A

6. In an apparatus of the kind described, the combination of a supplytank, an intake passage, an inclosed chamber having a 10G liquid spaceand an air space, a passage communicating with the air space of 'saidcham-- ber and said intake passage, a conduit extending from a pointbeneath the liquid in said supply tank to said chamber, an inclosedintermediatereservoir, a passage leading from the liquid space of saidchamber to said intermediate reservoir. means for permitting the lovvyof liquid from said chamber to the intermediate reservoir and4 110preventing a flow in the reverse direction, means for equalizing the airpressure in said chamber and 4intermediate reservoir when required, aconstant levelkreservoir op'en to the atmosphere, a conduit leadingdovvn- Ward from the liquid space in said intermediate reservoir andopening into said constant level reservoir and so located that theliquid in said constant level reservoir shall form an air seal` so thata substantially con- Voir, a passage extending from said chamberdownward into said reservoir and open at its -lower end and so locatedthat the liquid in said reservoir shall form an airseal so that asubstantially constant level shall be thereby maintained in said reser-Voir, and a manipulatable valve whereby air may be admitted to saidchamber.` in required volume to prime an engine.

8. In an apparatus of the kind described, the combination of a supplytank, an intake passage, an inclosed chamber having a liquid space andan air space, a passage communieating with the air space of said chamberand said intake passage, a conduit extending rom va point beneath theliquid in said supply tank to said inclosed chamber, an inclosedintermediate reservoir, a passage leading from the liquid space of saidchamber to said intermediate reservoir, means for permitting a How ofliquid from said chainber to` said intermediate reservoir and preventinga flow in the reverse direction, and

meanscontrolled by the quantity of liquid in said chamber for equalizingthe air pressure in said chamber and intermediate reservoirwlienrequired.

9. ln a vacuum feed system, the combination of a liquid supply tank, aVacuum-producing passage, an auxiliary vessel having an upper and alower chamber, a conduit connecting said tank and auxiliary vessel, apassage communicating with said auxiliary vessel and saidvacuum-producing passage, a check valve between the chambers openingtoward the lower chamber, and a float in the upper chamber adapted tooperate said valve mechanically.

10. ln a vacuumv feed system, the combination of a liquid supply tank, avacuumproducing passage, an auxiliary vessel havving an upper and alower chamber, a conduit connecting said tank and auxiliary vessel, apassage communicating withy said auxiliary vessel and saidvacuum-producing passage, a check valve between the chambers openingtoward the lower chamber, a oat in the upper chamber adapted to operatesaid valve mechanically, said oat being .adapted to be moved in bothdirections by the fluid and mechanical means at a variable velocity. f

11. ln a Vacuum feed system, the combination of a supply tank, a vacuumchamber, awconduit leading from said vsupply tank to said vacuumchamber, means for making -v and breaking a vacuum in said chamber, anintermediate chamber, a conduit leading from said vacuum chamber to saidinter- Y mediate chamber, a constant level chamber, a conduit leadingfrom said intermediate chamber to said constant level chamber, the

last named conduit being continuously open

